Ben Affleck Is Reportedly Going Steady With His New Co-Star

It feels like just yesterday we were being told that Ben and Jen are adopting twins to save their relationship, but now the tabloids are singing a different tune.

Apparently not only is the newly clean shaven Ben not planning to repair his marriage, but he's actually dating his Live by Night co-star, Sienna Miller, well, according to the dodgy tellings of OK! magazine.

The gossip rag reports that Ben, 43, has been "cozying up" to Sienna, 33.

"Ben's had Sienna in his sights for a while. They're really flirty on set," a source tells the mag, but, "Right now Ben just wants to keep things casual so he can concentrate on his children. He's not looking for anything serious."

Well, we certainly believe the latter half of that sentence. Ben has stayed by his family's side since the big "d," as evidenced by daily paparazzi pics of him and his three tots.

Sienna, who was previously engaged to the ever-hunky Jude Law, is no stranger to insidious rumors. She was said to have had an affair with James Bond, err, Daniel Craig in a scandal that erupted after the now defunct News of the World hacked Law's phone and released audio of him yelling at Craig for his behavior.

Well, at least if Ben and Sienna are an item, there's no alleged cheating going on this time. Stay tuned for this saga's next edition when we learn that Sienna is carrying Ben's lovechild...or better yet, twins!

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